The incorrect statement among the following is:

1. TiNO34 is a colourless compound.

2. CuNCCH34+BF4- is a colourless compound.

3. CrNH363+3Cl is a coloured compound..

4. K3VF6 is a colourless compound.

Subtopic:  Introduction, Classification and Nomenclature |
 63%
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Identify the correct order of wavelength of light absorbed for the following complex ions.

CoH2O63+ ;          CoCN63- ;             CoI63- ;               Coen33+

          I                                      II                                 III                                 IV

(1) III>I>IV>II                                 

(2) II>IV>I>III

(3) III>I>II>IV                                 

(4) I>III>IV>II

Subtopic:  VBT, CFT & their Limitations |
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The possible geometrical isomers shown by CoenBr2Cl2- is :

1. 2                                           

2. 3

3. 4                                           

4. 6

Subtopic:  Isomerism in Coordination Compounds |
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The total number of isomers of the complex, CoNH33NO22NO3 complex is :

1. 10                                       

2. 6

3. 4                                         

4. 12

Subtopic:  Isomerism in Coordination Compounds |
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Which one of the following complexes exhibit chirality ?

(1) Crox33                             

(2) cis-PtCl2en

(3) cis-RhCl2NH32             

(4) mer-CoNO23trine

Subtopic:  Isomerism in Coordination Compounds |
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Assertion : In complex CrNH34 BrClCl, the 'spin only' magnetic moment is close to 1.73 B.M.

Reason : All known mononuclear complexes of chromium (III), irrespective of the strength of the

               ligand field, must have three unpaired electrons.

 

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  VBT, CFT & their Limitations |
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Assertion : tris (ethane-1, 2-diamine) nickel(II) chloride is homoleptic outer orbital complex

Reason : The geometry of Ni in tris (ethane-1, 2-diamine) nickel(II) chloride is trigonal bipyramidal.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  VBT, CFT & their Limitations |
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Assertion : Bis(dimethylglyoximato)nickel(II) can show geometrical isomerism.

Reason : Tetrahedral complexes with chiral structure exhibit optical isomerism.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Ligands |
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Assertion : The magnitude of charge density for a given ligand increases as the charge on the metal

                  ion increases.

Reason : NH3 is a weak field ligand towards Co2+ but acts as a strong field ligand towards Co3+.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  VBT, CFT & their Limitations |
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The 'brown ring' formed at the junction of two layers in the test of nitrate is due to the formation of a complex ion, FeH2O5NO2+. Which of the following statemens are correct for this complex [u=3.87 B.M.)

 (i) Oxidation state of Fe is +1 and NO exists as NO+.

 (ii) The complex ion is in octahedral geometry as attained by sp3d2 hybridisation.

(iii) The complex is paramagnetic and has three unpaired electrons due to transfer of electron from NO to Fe2+.

(iv) The complex is in octahedral geometry as attained by d2sp3 hybridisation.

 (v) The brown colour of the complex is attributed to d-d transition of electron.

 

(1) (i), (ii) and (v)                                       

(2) (iii), (iv) and (v)

(3) (i), (ii) and (iii)                                       

(4) (ii), (iii) and (v)

Subtopic:  Introduction, Classification and Nomenclature |
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